Results 211 to 220 of about 10,329 (261)

Asymmetrical PWM flyback converter

2000 IEEE 31st Annual Power Electronics Specialists Conference. Conference Proceedings (Cat. No.00CH37018), 2002
The asymmetrical PWM converter with the flyback output rectifier (asymmetrical PWM flyback converter) is proposed in this paper. The asymmetrical PWM flyback converter has the feature of zero-voltage switching (ZVS) in the active switches using resonance of the parasitic components.
D.H. Seo, O.J. Lee, S.H. Lim, J.S. Park
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An Improved ZVS PWM Three-Level Converter

IEEE Transactions on Industrial Electronics, 2004
This paper proposes an improved zero-voltage-switching pulse-width-modulation three-level converter (ZVS PWM TLC), which is improved from the original ZVS PWM TLC just by exchanging the position of the resonant inductor and the transformer, such that the transformer is connected with the lagging switches.
Ke Jin, Xinbo Ruan, Fuxin Liu
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Harmonic analysis of PWM converters

IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 2000
Summary: A nonlinear vector differential equation of a periodically time-variant system is applied to the harmonic analysis of pulsewidth modulation (PWM) converters. The differential equation is solved by a combination of harmonic balance and small parameter methods. This results in an equivalent system of algebraic equations from which a steady-state
Qiu, Shui-Sheng, Filanovsky, I. M.
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A distributed PWM strategy for modular multilevel converter

IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society, 2014
The modular multilevel converter (MMC) has become a potential candidate for medium/high-power applications including high-voltage direct current (HVDC) transmission, adjustable speed drive, and static var compensation systems. One of the technical challenges associated with the control of an MMC is the choice of pulse width modulation (PWM) strategy ...
Suman Debnath, Jiangchao Qin, Maryam Saeedifard   +2 more
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Low-frequency characterization of PWM converters

1985 IEEE Power Electronics Specialists Conference, 1985
Low-frequency components of states or outputs in PWM dc and ac converters can be characterized by differential equations called describing equations. These equations are derived by inspection of converter topology and use of switching functions and duty ratios.
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PWM DC/DC Converters

2014
In principle, the pulse DC/DC converters consist of two parts, a basic circuit and a regulating assembly. The basic circuit comprises of switches (usually a transistor and a diode), a choke and/or a transformer, and a capacitor. By turning on and off the switches in a controlled manner, the required amount of energy is transferred through the switches ...
Branko L. Dokić, Branko Blanuša
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Software controller for PWM converters

Proceedings of 1994 IEEE Applied Power Electronics Conference and Exposition - ASPEC'94, 2002
A software controller is realized for DC-DC switching power converters. The software is capable of implementing several real-time control schemes such as the continuous/discrete switching frequency control, continuous/discrete pulse-width control and phase control of PWM converters.
J.P. Agrawal, O. Farook, C.R. Sekhar
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Novel zero-current-switching PWM converters

IEEE Transactions on Industrial Electronics, 1997
This paper presents a new family of pulsewidth-modulated (PWM) converters, featuring soft commutation of the semiconductors at zero current (ZC) in the transistors and zero voltage (ZV) in the rectifiers. Besides operating at constant frequency and with reduced commutation losses, these new converters have output characteristics similar to the hard ...
Canesin, C. A., Barbi, I
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The ZVS-PWM Active-Clamping CUK Converter

IEEE Transactions on Industrial Electronics, 2004
A CUK converter featuring clamping action, pulsewidth modulation, and soft-switching commutation is proposed to overcome the limitations of the conventional CUK converter. As the resonant circuits absorb almost all parasitic reactances of switches, including transistor output capacitances, this converter is suitable for high-frequency operation ...
Douglas Braz Costa, Cláudio Manoel C. Duarte   +1 more
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New ZCS PWM converter with operating a dual converter

IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03., 2003
A novel ZCS PWM converter with dual converter operation is proposed. All switches in the proposed converter are operating to work alternatively turn-on and turn-off with soft switching condition. The switch S2 in the conventional ZVT converter plays a part as the auxiliary switch to operate the main switch S1 and the rectifier in the soft switching ...
null Tae-Woo Kim, null Hack-Sung Kim
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